No, you cannot legally do this.
Star Wars is now the intellectual property of Disney. Any reference to named characters, locations, concepts, or other aspects of the universe they've helped popularize, that are not your original creation, would be an unlicensed use of their property.
If Disney's legal team notices your game, it's possible, arguable likely, that it will be targeted for a DMCA takedown, a cease-and-desist notice, or a lawsuit against yourself for infringement on their intellectual property.
tl;dr: If something is not your original creation, and you were not licensed to use it by its creator/owner, then it is not yours to use in your game.
The best way to avoid legal trouble is to use only your own original creative works, or those you've paid collaborators to create/use for that purpose.
I would argue that this use of an existing franchise is also not a good portfolio piece, because can read to potential employers as "I lack original ideas of my own, the collaborative spirit to work with other creatives, or a regard for the legal rights of others" — a dangerous combination in a creative industry.